trīˈklinēəm noun
( plural triclin·ia -ēə)
Etymology: Latin, from Greek triklinion, from tri- three + klinion, diminutive of klinē couch — more at tri- , clin-
1. : a couch used by ancient Romans for reclining at meals, extending round three sides of a table, and usually divided into three parts
2. : a dining room furnished with a triclinium